The following are known Gecko Codes for Doctor Who: Return to Earth on Nintendo Wii (Wii).

Inf Air (Stage 1) [Skiller]
04010B24 EC00F828

Inf HP [Skiller]
C200D270 00000002
3EE042C8 92E3004C
C023004C 00000000

Use Money Get 999 [Skiller]
0403D228 388003E7
0403D41C 388003E7
Only In Bonus Section will it read 999 when used

Go to Bonus Section get 1000 Money [Skiller]
C200F5B4 00000002
3B6003E8 9363061C
8063061C 00000000

Unlock All Bonus Content (View) [Skiller]
C203D9AC 00000002
38000001 901C0020
801C0020 00000000

Unlimited Ammo [Skiller]
0401BB2C 38030000

Inf HP (Circuit) [Skiller]
0402878C EC21F828
04025640 EC00D828

Unlimited Ammo(Crystals) [Skiller]
0401BB2C 38030000

Have 3 Crystals First 3 Slots

Blue [Skiller]
047F004C 00000003
087F006C 00000001
20020004 00000000
Note Might be good to put them on button activation

Red [Skiller]
047F0050 00000003
087F006C 00000002
20020004 00000000

Yellow [Skiller]
047F0054 00000003
087F006C 00000003
20020004 00000000
Note Might be good to put them on button activation

Purple [Skiller]
047F0058 00000003
087F006C 00000004
20020004 00000000
Note Might be good to put them on button activation

Green [Skiller]
047F005C 00000003
087F006C 00000005
20020004 00000000
Note Might be good to put them on button activation

Gold [Skiller]
047F0060 00000003
087F006C 00000006
20020004 00000000
Note Might be good to put them on button activation

Controller
8019779A = WiiMote
Paste the address in the address box on this site (http://geckocodes.org/index.php?arsenal=2 ) then pick your Button activators and put them on top of the codes . Note u need to put E0000000 80008000 on the bottom of the code